Inspiring music, short (5:29), with primary source photographs, this video shows an overview of the arrival at Ellis Island and the processing of immigrants,
No one has ever seen one of these NINA signs because they were extremely rare or nonexistent.
The NINA slogan seems to have originated in England,
probably after the 1798 Irish rebellion. Throughout the 19th and 20th centuries it was used by English to indicate their distrust of the Irish, both Catholic and Protestant.